I never indugle on junk food.. I feel guilty? Helpppp please?

I'm 15, very healthy and I cant eat junk food? I feel like if I eat a packet Ill get fat I feel guilty.. I never treat myself and I want/need to gain weight my hip bones stick out..

I have a doughnut infront of me with chocolate in the middle..... If I eat it I feel like Ill gain weight..
4 answers 4